// pages/shangpin_detail/shangpin_detaiil.js
import {request} from "../../request/index" 
Page({
  data: {
    goodsObj:{},
    isCollect:false
  },
  GoodsInfo:{},
  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
    let pages = getCurrentPages();
    let currentPage = pages[pages.length-1];
    let options = currentPage.options;
    const {goods_id}=options;
    this.getGoodsDetail(goods_id);
  },
  async getGoodsDetail(goods_id){
    const goodsObj = await request({
      url:'/goods/detail',
      data:{
        goods_id
      }
    });
    this.GoodsInfo = goodsObj;
    let collect = wx.getStorageSync('collect')||[];
    let isCollect = collect.some(v=>{
      return v.goods_id === this.GoodsInfo.goods_id
    })
    this.setData({
      goodsObj:{
        goods_name:goodsObj.goods_name,
        goods_price:goodsObj.goods_price,
        goods_introduce:goodsObj.goods_introduce.replace(/\.webp/g,'/.jpg'),
        pics:goodsObj.pics
      },
      isCollect
    })
  },
  handlePreviewImage(e){
    const urls = this.GoodsInfo.pics.map(v=>v.pics_mid);
    const current = e.currentTarget.dataset.url;
    wx.previewImage({
      current,
      urls
    })
  },
  handleCartAdd(){
    let cart = wx.getStorageSync('cart')||[];
    let index = cart.findIndex(v=>v.goods_id===this.GoodsInfo.goods_id)
    if(index===-1){
      this.GoodsInfo.num=1;
      this.GoodsInfo.checked=true;
      cart.push(this.GoodsInfo)
    }else{
      cart[index].num++;
    }
    wx.setStorageSync('cart',cart);
    wx.showToast({
      title: '加入成功',
      mask:true
    })
  },
  handleCollect(){
    let isCollect = false;
    let collect = wx.getStorageSync('collect')||[];
    let index = collect.findIndex(v=>v.goods_id===this.GoodsInfo.goods_id);
    if(index!==-1){
      collect.splice(index,1);
      isCollect = false;
      wx.showToast({
        title: '取消成功',
        icon:"success",
        mask:true
      })
    }else{
      collect.push(this.GoodsInfo);
      isCollect=true;
      wx.showToast({
        title: '收藏成功',
        icon:'success',
        mask:true
      })
    }
    wx.setStorageSync('collect', collect);
    this.setData({
      isCollect
    })
  }
})